The Sec Statistical Bulletin Does Not Show Monthly Revisions For Back Data. Source: U.S. Department Of Commerce, For 1924-1940 Data: Table Obtained From The Survey Of Current Business (Obe-53, August 19, 1958); For 1941-1964 Data: Business Statistics, 1947, And Subsequent Statistical Supplements To Scb; The Latest Data Are From Scb, Monthly And The Securities And Exchange Commission Statistical Bulletin, Monthly